Deck 19: Vector-Borne Diseases

Question 1

The diagnosis of Lyme disease in the United States is based on:

A) characteristic clinical findings.
B) history of exposure in endemic area.
C) erythema migrans (EM)or an antibody response to Borrelia burgdorferi observable by the ELISA or Western blot test.
D) all of the above.

Answer 1

all of the above.

Question 2

Fill in the blanks with the correct pathogen.
Examples of Vector-Borne Diseases

A)Bacteria
B)Protozoan parasite
C)Rickettsiae
D)Virus

Answer 2

1,D;2,D;3,A;4,B;5,A

Question 3

Match the type of tick of the Ixodes ricinus complex with the geographic area of prevalence.

I.scapularis (formerly classified as I.dammini)

A)Europe
B)Western United States
C)Asia
D)Northeastern and Midwestern United States

Answer 3

Northeastern and Midwestern United States

Question 4

One of the most widely available assays for antibody in Lyme disease is:

A) EIA for total IgM or IgG antibodies.
B) Southern blot test.
C) indirect fluorescent antibody (IFA).
D) RIA.

Question 5

Patients with Lyme arthritis should demonstrate positive findings for:

A) serum antinuclear antibodies.
B) rheumatoid factor.
C) the VDRL test.
D) antibodies to Borrelia burgdorferi.

Question 6

Match the type of tick of the Ixodes ricinus complex with the geographic area of prevalence.

I.persulcatus

A)Europe
B)Western United States
C)Asia
D)Northeastern and Midwestern United States

Question 7

Serologic assays for Lyme disease are:

A) highly specific in the early stages.
B) highly sensitive in the early stages.
C) insensitive during the first several weeks of infection.
D) insensitive during the first months of infection.

Question 8

Match the preferred host with the correct animal(s)or birds.
Preferred host for larval and nymphal stages of I.scapularis.

A)White-footed mouse
B)White-tailed deer

Question 9

Match the type of tick of the Ixodes ricinus complex with the geographic area of prevalence.

I.ricinus

A)Europe
B)Western United States
C)Asia
D)Northeastern and Midwestern United States

Question 10

Lyme disease usually occurs during the summer,with most patients suffering from:

A) flulike symptoms.
B) erythema migrans (EM).
C) arthritis.
D) both a and b

Question 11

Match the causative agent with the appropriate characteristic.

Borrelia burgdorferi strains

A)Associated with the chronic skin condition acrodermatitis chronica atrophicans (ACA)in Europe
B)United States
C)Associated with neurologic symptoms in Europe

Question 12

Match the causative agent with the appropriate characteristic.

B.garinii

A)Associated with the chronic skin condition acrodermatitis chronica atrophicans (ACA)in Europe
B)United States
C)Associated with neurologic symptoms in Europe

Question 13

Most U.S.cases of Lyme disease remain concentrated in ____________ regions.

A) northeastern
B) north-central
C) Pacific coastal
D) all of the above

Question 14

Match the causative agent with the appropriate characteristic.

B.afzelii

A)Associated with the chronic skin condition acrodermatitis chronica atrophicans (ACA)in Europe
B)United States
C)Associated with neurologic symptoms in Europe

Question 15

Erythema chronicum migrans (ECM)is the _______________ caused by a tick bite.

A) itchy rash
B) red bull's-eye rash
C) spirochete-infected skin lesion
D) both b and c

Question 16

What is the causative agent of Lyme disease?

A) Herpesvirus
B) Borrelia burgdorferi
C) Treponema pallidum
D) Deer tick

Question 17

Match the type of tick of the Ixodes ricinus complex with the geographic area of prevalence.

I.pacificus

A)Europe
B)Western United States
C)Asia
D)Northeastern and Midwestern United States

Question 18

The CLIA-waived procedure for presumptive testing for Lyme disease is the:

A) ELISA
B) Western blot test.
C) indirect fluorescent antibody (IFA).
D) PreVue assay for Borrelia burgdorferi.

Question 19

The clinical case definition of Lyme disease includes but is not limited to:

A) the presence of erythema migrans.
B) at least one objective,late-manifesting sign of musculoskeletal,neurologic,or cardiovascular disease for antibody to Borrelia burgdorferi.
C) positive serologic evidence.
D) all of the above.

Question 20

Match the preferred host with the correct animal(s)or birds.
Preferred host for I.scapularis adult stage.

A)White-footed mouse
B)White-tailed deer

Question 21

Match the organism with the appropriate characteristic:
West Nile virus

A)Infects red blood cells
B)Member of the Japanese encephalitis group

Question 22

Match the Ehrlichia species developmental stages with the appropriate description.

Final stage

A)Packed elementary bodies (initial bodies)visible
B)Enter a leukocyte by phagocytosis and multiply rapidly
C)Morular,or mulberry,forms

Question 23

Match the organism with the appropriate characteristic:
Babesiosis

A)Infects red blood cells
B)Member of the Japanese encephalitis group

Question 24

Match the Ehrlichia species developmental stages with the appropriate description.

First stage

A)Packed elementary bodies (initial bodies)visible
B)Enter a leukocyte by phagocytosis and multiply rapidly
C)Morular,or mulberry,forms